Toshiba satellite a215-s7437 bios pw

For that you need to reset factory defaults settings for bios.
For reset bios u have to open back side of your laptop then u find motherbord circuit there.
pull cmos cell on motherbord for 15 minute then it reset to defaults.
Also u can reset with jumper settigns read carefully on mother bord there is 1 jumper near cmos cell u read there " bios reset or clear"
It is on 1-2 position right now set it in 2-3 position then power up then all bios settings are reset.
then again set it in 1-2 its original position.
Then it not want password.

There is a well know issue with Toshiba laptops of certain models, where at startup suddenly ask for a password.
There is NO WAY you can reset that.
You must take it to the nearest Toshiba authorized service center.
There will be no charge for it.
You should first call them to get an authorization number.
Their number is 1(800)457-7777
Just tell them that your laptop is asking for a password at boot up, and give them your model number.

They will also flash the CMOS so this issue won't repeat again.

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Only way to remove the password without knowing it is to take out the cmos battery for a few minutes (aswell as any other power source.) the laptop most likely needs to be taken apart to do this.